- Published on
Simonw/pedalican
- Authors
- Name
- DeepHorus
Simon Willison, a prominent software developer, accidentally activated a 'pet' feature in Codex Desktop on July 14, 2026, leading him to create a custom animated pelican on a bicycle named 'Pedalican.' The pet, reminiscent of the classic Clippy assistant, appears as a small robot on the desktop, providing updates on Codex tasks. This incident highlights the expanding capabilities of AI-driven customization in productivity tools.
Codex Desktop initially introduced pets in May 2026, but Willison only discovered them recently. The feature allows users to create their own animated companions using AI image generation. Willison's creation process involved instructing the system to build a pelican on a bicycle, which was then executed by GPT-5.6 Sol and gpt-image-2 over multiple rounds.
The development required generating sprite assets through several stages. GPT-5.6 Sol first created a character reference image based on a detailed prompt specifying a compact, adorable baby pelican with a cream-white body, coral-orange bill and feet, riding a tiny sky-blue bicycle. Subsequent rounds produced individual sprite frames, which were compiled into GIFs for various animations, such as waving. Willison documented the entire process on his GitHub repository, including all generated images and sprite sheets.
According to Willison's blog, the key implementation details are open source. Two skills, both licensed under Apache 2.0, underpin the pet creation mechanism. This transparency allows other developers to study and replicate the technique, potentially fostering further innovation in AI-generated game assets.
The implications of this development are significant for game development and digital art. Willison noted that he had been looking for ways to use image generation to create simple game-ready sprites. The successful creation of Pedalican demonstrates a practical application of AI in generating consistent, animatable characters from natural language descriptions.
Willison expressed enthusiasm about the process, remarking that GPT-5.6 Sol came up with the name 'Pedalican,' which he liked. The open-source nature of the skills involved suggests that similar custom pet creation could become available to a wider audience, enabling personalized desktop companions. This trend could enhance user engagement by blending productivity tools with creative expression.
Looking forward, the integration of such AI-driven customization may become a standard feature in software. As image generation models improve, the quality and complexity of generated sprites are likely to increase. Willison's experience with Pedalican offers a glimpse into a future where users can effortlessly create their own digital mascots, transforming static interfaces into dynamic, personalized environments.
